Force-pump



A. T. BROWN.

FORCE PUMP.

APPucATloN FILED FEB.18.1919.

Ptena Nov. 16, 192,0.

/NVE/VTR ALEXANDER T. BROWN, OF SYRACUSE, .NEW YORK.

FORCE-PUMP.

Specicaton of Letters Patent.

Patented N ov. 16, 1920.

Application led February 18, 1919. Serial N o. 277,854.

To all 'whom t may concern Be it known that I, ALEXANDER T. BROWN, acitizen of the United States, and a resident of Syracuse, in the countyof Onondaga and State of New York, have invented a certain new anduseful Force-Pump, of which the following is a specication.

This invention has for its object a force pump or a force feedlubricator which is particularly simple and compact in construction andis composed of a minimum number of parts. The invention consists in thecombinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanyingdrawings in which like characters designate corresponding parts in allthe views.

Figure l is a longitudinal sectional view partly in elevation of thisforce feed lubricator, the contiguous portion of the oil reservoir beingalso shown.

Fig. 2 is an end elevation thereof.

T his force feed lubricator comprises, generally, an elongated bodymember having a lengthwise feed passage opening through one end thereofand a delivery passage at the other end of said passage, and a feedmember extending lengthwise of the body member and journaled in thepassage, one of said members being provided with a spiral rib extendingfrom the outer inlet end of the passage to the delivery chamber.

l designates the body having a lengthwise feed passage 2 therein, thepassage opening through one end of the body and also opening into adeli-very chamber 3 near the other end of the body, the passage 3 havingan outlet to which a pipe 4l is connected.

5 is a feed member extending through the chamber 3 and being usuallyjournaled in the passage 2 and in a bearing or neck 6 at the end of thebody contiguous to the delivery chamber 3, the member 5 being here shownas provided with a peripheral thread or rib 7 extending from the outerend of the passage 2 to the inner end thereof and into the deliverychamber 3.

Preferably, the inlet end of the feed passage 2 widens as at 8. A nut 9threads on the neck 6 and holds a packing 10 around thelportion of themember 5 located in said nec r.

rThe member 5 is provided at its end adjacent the chamber 3 withsuitable means as a spindle 11 to which means for rotating the member 5is connected.

In operation, the body l is arranged with the inlet end of the passage 2in a reservoir l2 for oil or other materialy to be pumped and during therotation of the feed member 5, the oil is forced through the passage 2to the delivery chamber 3 and from t ere through the discharge pipe 4 tothe parts to be lubricated. During the operation of the pump the member5 bears on the walls of the passage 2 and owing to the viscosity of theoil pressure is created by the pump.

This pump is particularly advantageous in that it consists of but twomain parts which are economical of manufacture and which are readilyassembled, and further in that it contains no mechanism which can clogor get out of order.

hat I claim is:

A force pump comprising a body member formed with a lengthwise elongatedfeed passage, and a delivery chamber within the body, the feed passageopening at one end into said chamber and at its other end through anouter end of the body, and a rotatable member journaled in said passageand engaging the walls thereof, the rotatable member having screwthreads extending from its outer end to the inner end of the saidpassage and into the chamber, the inlet end of the passage being flaredoutwardly and the convolutions of the screw within the flared portionbeing of subst-anu tially the same diameter as those within theremainder of the body whereby the flared portion diverges away from theconvolutions at the outer end of the rotatable screw member,substantially as and for the purpose described.

In testimony whereof, I have hereunto signed my name, at Syracuse, inthe county of Onondaga, and State of New York, this 10th day of Feb.,1919.

ALEXANDER T. BROVN.

